package test;

import java.util.Scanner;

public class CEO {

	public static void main(String[] args) {
		
		Scanner sc = new Scanner(System.in);
		
		String str = sc.nextLine();
		
		int countC = str.length() - str.replaceAll("c|C", "").length();
		int countE = str.length() - str.replaceAll("e|E", "").length();
		int countO = str.length() - str.replaceAll("o|O", "").length();
		
		int count = 0;
		while (count < str.length()) {
			
			if (countC != 0) {
				System.out.print("C");
				countC--;
			}
			
			if (countE != 0) {
				System.out.print("E");
				countE--;
			}
			
			if (countO != 0) {
				System.out.print("O");
				countO--;
			}
			
			count++;
		}
		
		System.out.println();
		
		sc.close();
	}
}
